Installing the efan on my truck was worth it. It took a few hours but I finally got it all together and operating correctly. I gained 1.3 mpg on the first tank with it. I also had a noted power increase and the fact that the screaming cyclone sound of the stock fan is gone, well that was worth it in itself. If you have a mechanical clutch fan I strongly suggest you take a look at the taurus fan, its a great mod.
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